DLAB SK-L330-Pro LCD Digital Linear Shaker

Overview

The DLAB SK-L330-Pro LCD Digital Linear Shaker is an engineered platform for precise, reproducible linear reciprocating motion in life science and bioprocessing laboratories. Unlike orbital or rotary shakers, this instrument employs a controlled linear oscillation mechanism—ideal for applications requiring low-shear, uniform mixing without vortex formation or excessive splashing. Its 10 mm amplitude and adjustable speed range (100–350 rpm) deliver consistent energy transfer across diverse sample formats, from microplates and Petri dishes to Erlenmeyer flasks and culture tubes. Designed for integration into regulated workflows, the SK-L330-Pro supports GLP-compliant documentation via its RS232 interface and traceable parameter logging through included PC software. The unit operates at ambient temperature up to 40 °C, making it suitable for non-temperature-critical incubation support or room-temperature cell suspension, staining, hybridization, and washing protocols.

Key Features

• Linear reciprocating motion optimized for gentle yet effective mixing of sensitive biological samples
• Dual independent LCD displays—one for real-time speed (rpm), one for remaining timer duration—enabling simultaneous monitoring without mode switching
• Brushless DC motor ensures maintenance-free operation, high torque stability across the full speed range, and extended service life under continuous duty cycles
• Integrated speed-limit safety lock prevents accidental overspeed operation; user-defined upper limit enforced at firmware level
• Robust aluminum-alloy platform with reinforced mounting points accommodates universal clamping accessories (e.g., flask holders, microplate adapters, tube racks)
• RS232 serial interface compliant with standard laboratory communication protocols; enables remote configuration, real-time data streaming, and audit-trail generation
• Free Shaker PC Software provides intuitive GUI for parameter programming (speed, time, ramp profiles), live curve visualization, and CSV export compatible with LIMS and ELN systems

Sample Compatibility & Compliance

The SK-L330-Pro accepts standard labware via interchangeable fixtures—including 100–500 mL flask clamps, 6-/12-/96-well plate carriers, and custom-machined adapters for irregular containers. Its 7.5 kg maximum load capacity (inclusive of fixture mass) ensures mechanical stability during extended runs. The device meets IEC 61000-6-3 (EMI emission) and IEC 61000-6-2 (immunity) standards. While not a Class II medical device, its construction adheres to ISO 13485-aligned quality control practices during manufacturing. The IP21 enclosure rating protects internal electronics against vertically falling drips and solid objects >12.5 mm—suitable for general laboratory environments per ISO 14644-1 Class 8 (ISO 8) cleanroom-adjacent use. No integrated temperature control means it is not intended for thermally regulated assays; users requiring heating must pair it with external incubators.

Software & Data Management

The bundled Shaker PC Software operates on Windows 10/11 and supports configurable method templates, user-level access control (admin/operator roles), and timestamped event logs—including start/stop commands, speed changes, and timeout triggers. All parameter modifications are recorded with operator ID (if enabled), date/time stamp, and pre-/post-change values—fulfilling basic FDA 21 CFR Part 11 requirements for electronic records when deployed with validated system configurations. Data export includes raw time-series RPM and timer values, enabling post-hoc analysis in MATLAB, Python (Pandas), or statistical packages. Firmware updates are delivered via signed HEX files with checksum verification to ensure integrity.

Applications

• Cell culture maintenance: Gentle resuspension of adherent or suspension cells prior to passaging or harvesting
• Molecular biology: Hybridization steps in Southern/Northern blotting; antibody incubation in immunostaining protocols
• Clinical diagnostics: Uniform mixing of whole blood samples prior to centrifugation or automated analyzer loading
• Quality control: Solubility testing of excipients or APIs under agitation per USP <701> guidelines
• Environmental microbiology: Extraction and homogenization of soil or water samples for microbial enumeration
• Educational labs: Demonstrating kinetics of enzyme-substrate reactions under controlled agitation conditions

FAQ

Does the SK-L330-Pro support programmable ramp-up or ramp-down profiles?

Yes—the PC software allows definition of multi-segment speed ramps with dwell times, enabling gradual acceleration/deceleration to minimize sample disturbance.
Is the RS232 interface optically isolated?

No; the interface uses standard TTL-level RS232 signaling. For electrically noisy environments, users should employ shielded cables and ground-loop isolation modules.
Can the shaker be operated continuously beyond 19 hours 59 minutes?

The timer function maxes out at 19 h 59 min, but the unit will continue oscillating at set speed indefinitely if the timer is disabled via software or front-panel override.
What is the repeatability tolerance for speed control?

Under steady-state conditions at 25 °C ambient, speed deviation is ±2 rpm across the 100–350 rpm range, verified per ISO 5725-2 precision testing methodology.
Are third-party fixtures compatible with the SK-L330-Pro platform?

Yes—any fixture with M4 threaded mounting holes on 40 mm centers can be mechanically secured; DLAB publishes open-mounting schematics for OEM integration.